THERMAL-FORMED TAPERED ENTRY, CLEAR DOMED CAP!
Our popular Acrylic STJ Cylinder, the ultimate combination pump! Forming is precise, cap joints are flawless; it's a TOTALLY professional product designed for big volume pumpers. Constructed from premium quality thick-wall (1/4" thick!) Cell-Cast Acrylic plastic. It's a two-stage body design (5" I.D. tapering smoothly to 4" at the entry) that becomes a three-stage (necking to 2-3/4") with the soft STJ seal! Actual entry/exit size is 4", because you exit the cylinder first, then remove the seal. The seal is elastic and stretches over the pumped package.
The standard glass STJ has been a popular and inexpensive entry-level cylinder option. While the glass STJ is quite effective, and quite tough as glass goes- there is always a risk because glass can break. That brings the risk of injury, and the more you pump, the greater the exposure. We highly recommend that you don't expose yourself to that risk!
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All our cylinders come equipped with the female coupling; the male insert is not included.
The Male Coupler Insert for the ASTJ is the industry standard style. Only one male insert is needed regardless of the number of cylinders you have.
If you do not have a coupler insert, you can order one here:| Purchase |
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International customers, see our International Shipping Page for details about delivery to your country.
1-866-345-3451 
